The integrated tapered headset that fill fit most of the NS Bikes aluminum frames (except Fuzz and Clash JR) and many other frames (all Octane One aluminum frames with tapered head tubes). Build from high quality materials and fitted with sealed bearings. Two crown races included to fit both taper 1.5 - 1 1/8” and standard 1 1/8” steer tubes. Crown races CNC machined of tough 7075 aluminum and come with a cut allowing super easy installation. The top cap, star nut and NS Bikes headset spacer set (4 sizes) included.